Windows 10 October 2018 Update's launch[1] was rocky[2] to say the least, with bugs popping up immediately after release, and one severe enough to delete user data upon installation[3]. This caused Microsoft[4] to suspend the rollout[5] until it could fix the issue, and industry-wide outrage at the lack of quality control on part of the Redmond giant in fixing bugs that had already been spotted in preview stages. Now it appears Windows 10 October 2018 Update (aka Windows 10 version 1809) has been hit with another bug related to ZIP archives. In the meanwhile, a security researcher has publicly outed a zero-day vulnerability in Windows 10, Windows Server 2016, and Windows Server 2019. A patch for this vulnerability has yet to be rolled out by Microsoft.
First spotted[6] by a Reddit user, the Windows 10 October 2018 Update contains a bug related to extracting/ pasting files from a ZIP archive when using the native Windows File Explorer tool. If a user tries to extract or paste a file (let's say, gadgets360.jpg) from inside a ZIP archive into another folder containing another file with the same name (gadgets360.jpg), they will not be given an overwrite prompt. Instead, the destination folder file's modified date changes, but the file is not replaced at all.
Windows 10 October 2018 Update Patch Now Giving Blue Screen of Death Issues, Some Users Report[7]
While this doesn't sound as serious as the data-loss bug, and doesn't actually overwrite the file, it is severe if one counts the use case where the original ZIP file is deleted by a user convinced they have replaced files. It also misleads users into believing there was no file...